. Zoology. Zoology. 10 ZOOLOGY. called Foraminifera (Laim, foramen, a hole or aperture; ferens, bearing). In some forms, as tlic fossil Numnnilifes, the chambers are numerons and I'egular, the shells being flat and consist- ing of eight coils situated in the same plane. A recent species of Foraminifer found at Borneo measures more than two inches in diameter, wliile a common form on the Florida reefs which is swallowed in large quantities by the Holothuria, or sea-cucumber, measures about one fifth of. Fig. 6.—Rotalia. A Ehizopod, showing the pseudopodia. an inch in diameter. Most of our nativ
. Zoology. Zoology. 10 ZOOLOGY. called Foraminifera (Laim, foramen, a hole or aperture; ferens, bearing). In some forms, as tlic fossil Numnnilifes, the chambers are numerons and I'egular, the shells being flat and consist- ing of eight coils situated in the same plane. A recent species of Foraminifer found at Borneo measures more than two inches in diameter, wliile a common form on the Florida reefs which is swallowed in large quantities by the Holothuria, or sea-cucumber, measures about one fifth of. Fig. 6.—Rotalia. A Ehizopod, showing the pseudopodia. an inch in diameter. Most of our native species are much more minute. The Eozo'oh, so-called, is supposed by some to be a Foraminifer, but others I'cgard it as of mineral ori- gin. These Foraminifera float in calm weather on the sur- face of the sea, and when tliey die their shells slowly sink to the bottom. They are exceedingly abundant, and the shells at the bottom accumulate in such quantities as to make a gray mud or ooze forming the bottom of the ocean at great depths: this soft, deep mud is called Uhjiigcriiui. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Packard, A. S. (Alpheus Spring), 1839-1905. N. Y. , Holt
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